Scrubber Inlet 360deg Repairment (Starboard & portside) for MAREN MAERSK

项目名称:

Scrubber Inlet 360deg Repairment (Starboard & portside) for MAREN MAERSK

项目开始时间:

2024-07-08 16:42


项目类型:

othere

项目描述:

According to the ship information provided by the owner,There are cracks and corrosion of inlet duct of marine scrubbers, so a total of five people from the SEASAVE service team were at the Qingdao shipyard on 03 ,Jul. 2024 to carry out the repair work.


进展:

Background:There are cracks and corrosion of inlet duct of marine scrubbers.

Background:There are cracks and corrosion of inlet duct of marine scrubbers.

Starboard and portside:
We found a lot of black clay covering the inlet and flow divider.
The worker used a shovel and polish machine to clean up dirt:
After cleaning , we removed the black clay of the inlet and found there’s corrosion all over the circle , which was consistent with the result of corrosion from the appearance:
Corrosion all over the circle, large cracks can be observed on both sides
Thickness measurement:
After cleaning and lapping start thickness measurement , the left and right sides were found serious corrosion ( Remaining thickness:3mm~4mm), but the top and bottom were mild corrosion(Remaining thickness >4mm).

进展:

Repair welding: Repair the corrosion and leakage of the weld(starboard and port).

Repair welding: Repair the corrosion and leakage of the weld(starboard and port).

Add fix plate above the crack so that crack is in the middle of the plate and plate is aligned with the crack direction:

Spare parts:
Description    Material & Size    Amount
Double plate    Alloy 31(EN 1.4562)     6 pcs
Welding material    ERNICRMO-13    2kg
Each plate has welds at both ends, the weld fuses with the inlet's shell, this ensures that after a certain plate is corroded and leaked, washing water will not enter other plate areas.
During the welding process, it is necessary to ensure that the interlayer temperature of the weld is below 80℃.

进展:

grinding and PT check

grinding and PT check

Grinding smooth:
At the same time, do a good PT check to prevent missing any areas of welding.                                                            
PT checking after welding.
Check all welds to avoid welding crack.

进展:

Job done

Job done

Finally,the thickness was measured again,and the corrosion was obviously improved.
The 360 deg welding work was done well and the leak was repaired.
However, we know that corrosion will continue (although the risk of leakage is greatly reduced), so it is still necessary for the crew to check the Inlet every month.

Scrubber Inlet 360deg Repairment (Starboard & portside) for MAREN MAERSK

项目名称:

Scrubber Inlet 360deg Repairment (Starboard & portside) for MAREN MAERSK

项目开始时间:

2024-07-08 16:42


面积:

装修风格:

othere

装修单元类型:

According to the ship information provided by the owner,There are cracks and corrosion of inlet duct of marine scrubbers, so a total of five people from the SEASAVE service team were at the Qingdao shipyard on 03 ,Jul. 2024 to carry out the repair work.

区域:


进展:

Background:There are cracks and corrosion of inlet duct of marine scrubbers.

Background:There are cracks and corrosion of inlet duct of marine scrubbers.

Starboard and portside:
We found a lot of black clay covering the inlet and flow divider.
The worker used a shovel and polish machine to clean up dirt:
After cleaning , we removed the black clay of the inlet and found there’s corrosion all over the circle , which was consistent with the result of corrosion from the appearance:
Corrosion all over the circle, large cracks can be observed on both sides
Thickness measurement:
After cleaning and lapping start thickness measurement , the left and right sides were found serious corrosion ( Remaining thickness:3mm~4mm), but the top and bottom were mild corrosion(Remaining thickness >4mm).

进展:

Repair welding: Repair the corrosion and leakage of the weld(starboard and port).

Repair welding: Repair the corrosion and leakage of the weld(starboard and port).

Add fix plate above the crack so that crack is in the middle of the plate and plate is aligned with the crack direction:

Spare parts:
Description    Material & Size    Amount
Double plate    Alloy 31(EN 1.4562)     6 pcs
Welding material    ERNICRMO-13    2kg
Each plate has welds at both ends, the weld fuses with the inlet's shell, this ensures that after a certain plate is corroded and leaked, washing water will not enter other plate areas.
During the welding process, it is necessary to ensure that the interlayer temperature of the weld is below 80℃.

进展:

grinding and PT check

grinding and PT check

Grinding smooth:
At the same time, do a good PT check to prevent missing any areas of welding.                                                            
PT checking after welding.
Check all welds to avoid welding crack.

进展:

Job done

Job done

Finally,the thickness was measured again,and the corrosion was obviously improved.
The 360 deg welding work was done well and the leak was repaired.
However, we know that corrosion will continue (although the risk of leakage is greatly reduced), so it is still necessary for the crew to check the Inlet every month.

进展:

进展:

进展: